Because it was initially cut off from the rest of the state due to natural geographic barriers like the Kankakee Marsh to the south, the Calumet Region was the last-settled portion of Indiana.
The toxic byproducts of these industries present major issues for public safety and natural resource management today.
The Memorial Day massacre of 1937, where ten steelworkers' rights activists were killed by police officers during a demonstration, occurred on Chicago's southeast side.
[4] Many Forest Preserve District of Cook County sites, such as Powderhorn Prairie, 95th/Dan Ryan Woods, and Eggers Grove are being restored under the care of volunteer stewards.
[7] The Calumet Region includes the Indiana cities of Gary, East Chicago, Hammond, Highland, Griffith, Munster, Merrillville, Schererville, Hobart, Whiting, Crown Point, Dyer, Saint John, and Valparaiso.